Encarsia formosa – Whitefly Parasite – 100 per Card (10,000 / 15,000)
Product details
| Management number | 250625500 | Release Date | 2026/09/17 | List Price | US$37.98 | Model Number | 250625500 | ||
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Higher-density hang cards for larger greenhouse whitefly jobs
Bigger spaces and heavier whitefly need more wasps per placement, and these Encarsia formosa cards deliver 100 parasitized scales each. The higher density means fewer cards to hang across a large greenhouse or room while still getting strong coverage. Encarsia is the proven greenhouse whitefly parasitoid, laying its eggs inside whitefly nymphs. Available in 10,000 and 15,000 count options for serious whitefly programs.
Live insects ship on Tuesdays only and arrive Wednesday. Orders must be placed 7 days in advance. Anything ordered by 3pm EST Tuesday ships the following Tuesday by UPS overnight shipping.
- Low-density cards mean many placements in a big space
- Sprays miss whitefly larvae on leaf undersides
- Whitefly rebuild fast after spraying
- Chemicals leave residue and re-entry waits
- Broad products harm other beneficials
- Coverage ends when spraying ends
- 100 scales per card means fewer cards to hang
- Wasps parasitize the nymphs where they feed
- Parasitized scales die and produce more wasps
- No residue and no re-entry interval
- Selective wasp spares your other biocontrol
- Wasps reproduce on site for ongoing control
More wasps per card 100 per card
Each card carries 100 parasitized scales, so you hang fewer cards to cover a large greenhouse or room while still delivering strong whitefly pressure.
The greenhouse whitefly standard
Encarsia formosa is the proven, widely used parasitoid for greenhouse whitefly, making it a dependable backbone for large-scale programs.
Kills the hidden nymphs
Females lay eggs inside whitefly nymphs on the leaf undersides. The larvae feed within and kill the host at the stage sprays rarely reach.
Gradual emergence
Wasps hatch from the cards over several days, spreading their arrival so coverage does not hinge on one single burst.
Clean canopy release
Cards clip into the canopy and release the wasps without loose debris, keeping flowers, buds, and fruit clean on sensitive crops.
Builds its own numbers
New wasps emerge from parasitized scales, so a repeated card program develops a self-renewing population across the canopy.
Hang the cards in the canopy, shaded from direct sun and drip.
Space them evenly; 100 parasitized scales emerge from each card, so you hang fewer.
Typical rate 1-10 wasps per m²; repeat until whitefly is controlled.
Keep sticky traps clear of the cards.
How the 100-per-card format clears whitefly
Hang the cards
Clip the high-density cards into the canopy across the grow, spaced evenly and shaded from direct light and drip.
Wasps emerge over days
Adult Encarsia hatch from the cards gradually and move to the leaf undersides where whitefly live.
They parasitize the nymphs
Females lay eggs inside whitefly nymphs, which darken and die instead of maturing.
Population renews itself
New wasps emerge from parasitized scales, so repeating cards keeps whitefly suppressed over the season.
- Encarsia formosa cards at 100 scales per card
- 10,000 or 15,000 total count for your chosen size
- Hanging and release instructions
- Insulated overnight packaging
- Density: 100 parasitized scales per card
- Counts: 10,000 or 15,000 total
- Smaller space? the 50-per-card format is the lighter option
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